14 A Rare Fossil Record The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized. Ichthyosaurs had

发表于:2018-11-27 / 阅读(1189) / 评论(0) 分类 新概念优美背诵短文50篇

17.Evolution of sleep Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptiles. There is some evidence that the two types of s

发表于:2018-11-27 / 阅读(643) / 评论(0) 分类 新概念优美背诵短文50篇

03 The Definition of Price Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a complex network compose

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42.Coal-fired power plants The invention of the incandescent light bulb by Thomas A. Edison in 1879 created a demand for a cheap, readily available fuel with which to generate large amounts of electric power. Coal seemed to fit the bill, and it fuel

发表于:2018-11-28 / 阅读(276) / 评论(0) 分类 新概念优美背诵短文50篇

41.American black bears American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. To the north, the black bear is actually gray or white in color. Even

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40 Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ni

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45.The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Suns very center. It is here that is to be found the source of the energy that the Sun constantly pours out i

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44.Obtaining Fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as a joke more appropriate to cartoons than real life. But now it is being con

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18.Modern American Universities Before the 1850s, the United States had a number of small colleges, most of them dating from colonial days. They were small, church connected institutions whose primary concern was to shape the moral character of thei

发表于:2018-12-08 / 阅读(314) / 评论(0) 分类 新概念优美背诵短文50篇

26. International Business and Cross-cultural Communication The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-cultural communication. Americans,

发表于:2018-12-08 / 阅读(340) / 评论(0) 分类 新概念优美背诵短文50篇

商务谈判最常用的句子 不知道该如何应付和外商谈判?下面这些句子可是谈判最常用的,快来看看吧? 1、Would anyone like something to drink before we begin?在我们正式开始前,大家喝点什么吧? 2、

发表于:2018-12-26 / 阅读(49) / 评论(0) 分类 实用英语

在雅思写作过程中,可以使用下面的万能句子,对于写作用词,为了避免重复,可以使用一些同义词。 万能句子: 1. Yet little has been done to solve this problem worldwide. 2. To make one final point, 3. As we

发表于:2019-02-03 / 阅读(100) / 评论(0) 分类 雅思英语

有效的句子要有重点,并且要突出重点。 句子的重点可以通过下列方法,加以突出: 1. 把重点摆在句首或句尾。 一般而论,最显眼的位置是在句尾,其次是在句首,中间的位置最平淡,乏善

发表于:2019-02-07 / 阅读(55) / 评论(0) 分类 实用英语

初中英语写作: 如何突出句子中的重点 句子的重点可以通过下列方法,加以突出: 1. 把重点摆在句首或句尾。 一般而论,最显眼的位置是在句尾,其次是在句首,中间的位置最平淡,乏善可

发表于:2019-02-09 / 阅读(98) / 评论(0) 分类 英语学习方法

The quick brown fox jumps oyer a lazy dog. (快速的棕色狐狸跳过一条懒狗。) 这个句子只使用了32个字母,却将英文26个字母完全包括了,所以是练习打字最好的材料之一。另外还有一个句子,也只用了

发表于:2019-02-13 / 阅读(69) / 评论(0) 分类 英文语法词汇

熟练地运用英语的一个重要方面就是学习并掌握英语本族者常用的生动、活泼的习语。 1. after you.你先请。这是一句很常用的客套话,在进/出门,上车得场合你都可以表现一下。 (好象现在女士

发表于:2019-02-13 / 阅读(56) / 评论(0) 分类 英文语法词汇

有效的句子要有重点,并且要突出重点。句子的重点可以通过下列方法,加以突出: 1. 把重点摆在句首或句尾. 一般而论,最显眼的位置是在句尾,其次是在句首,中间的位置最平淡,乏善可

发表于:2019-02-17 / 阅读(54) / 评论(0) 分类 四六级写作指导

1. After you.你先请。这是一句很常用的客套话,在进/出门,上车得场合你都可以表现一下。好象现在女士不愿意你这么做,特别是那些女权主义者,我还记得这么一段话:一个女士对一个让她

发表于:2019-02-18 / 阅读(44) / 评论(0) 分类 实用英语

一篇好文章的条件很多。除了内容丰富和组织紧密之外,词汇的运用和句子的处理,也起着决定性作用。 句子可长可短,同一件事,可以用不同的句式表达。如果句子清一色是简单句,文章必

发表于:2019-02-18 / 阅读(61) / 评论(0) 分类 实用英语

1. after you.你先请。这是一句很常用的客套话,在进/出门,上车得场合你都可以表现一下。 (好象现在女士不愿意你这么做,特别是那些女权主义者,我还记得这么一段话:一个女士对一个让她

发表于:2019-02-25 / 阅读(99) / 评论(0) 分类 实用英语